Dear sir, we know not what you mean.
Answer: x = 13
angel bge and angle agf are vertical meaning they’re equivalent
77 + 90 + x = 180 (180 because all of them added together are supplementary)
167 + x = 180
x = 13
X - 4 = 4
First you will start off by adding four on both sides
X-4=4
+4 +4
-4 +4 cancels out therefore it is now
X=8
I’m not too sure about the other as it kind of depends